Duolingo’s battle for learning in an AI world, with Luis von Ahn
When Duolingo CEO Luis von Ahn sent an internal memo about AI last year, he didn't expect it to go viral — or to ignite a firestorm about the future of work. Now he joins Rapid Response to unpack what he got right, what he got wrong, and what the backlash taught him about the real limitations of AI. Von Ahn also reveals why he's made a deliberate pivot in 2026: chasing users, not revenue — and what that bet says about how big Duolingo can get before ads become inevitable. It's a candid reckoning with hype, growth, and the surprisingly complicated promise of technology in education.
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How to make learning as addictive as social media | Luis von Ahn (re-release)
When technologist Luis von Ahn was building the popular language-learning platform Duolingo, he faced a big problem: Could an app designed to teach you something ever compete with addictive platforms like Instagram and TikTok? He explains how Duolingo harnesses the psychological techniques of social media and mobile games to get you excited to learn — all while spreading access to education across the world.
This episode originally aired on October 26, 2023.
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Gaming as the Future of Education with Duolingo CEO Luis von Ahn
On this episode of No Priors, Sarah talks to Luis von Ahn, founder and CEO of Duolingo, the world’s most popular education app with over 116 million monthly users and a market cap of approximately $17 billion. Controversially, it has recently committed to being “AI-first.” They discuss why motivation is the biggest challenge in education, how Duolingo harnesses game mechanics and behavioral insights to keep learners engaged, and the company’s efforts to leverage AI to personalize education at scale. Luis also shares thoughts on the Duolingo brand, courses beyond language (chess and math), and the broader impact of AI on content creation.
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Links:
Duolingo is now AI-First: http://bit.ly/3RQzny3
Show Notes:
0:00 Introduction
4:01 Optimizing learning behavior through tech
11:20 Adopting AI at Duolingo
17:25 AI’s threat to content companies
18:34 An unhinged corporate brand
21:28 How do people learn?
25:16 What people misunderstand about Duolingo?
26:24 How AI is transforming learning at scale
30:28 Leveraging AI across the business
Advice Line with Luis von Ahn of Duolingo
Duolingo co-founder Luis von Ahn joins Guy on the Advice Line to answer questions from three early-stage founders. Plus, Luis shares insights on how data can help entrepreneurs understand what their customers really want.
First, Steph in Chicago wonders how to manage expansion opportunities for her art-filled vending machines. Then Blair from Atlanta discusses his challenge of selecting which products to focus on with his tech accessories brand. And finally, Stephanie in Indiana considers the best way to fund more employees for her growing business designing living plant walls.
Thank you to the founders of Good Things Vending, Bair, and Naturspire for being a part of our show.
If you’d like to be featured on a future Advice Line episode, leave us a one-minute message that tells us about your business and a specific question you’d like answered. Send a voice memo to hibt@id.wondery.com or call 1-800-433-1298.
And be sure to listen to Duolingo’s founding story as told by Luis on the show in 2020.
This episode was produced by Katherine Sypher with music by Ramtin Arablouei. It was edited by Casey Herman. Our audio engineer was Cena Loffredo.
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Why Duolingo Worked (with Luis von Ahn, CEO)
Duolingo has fundamentally changed the landscape of self-guided education, starting with language learning. It is now a $9B publicly traded company in a space where everyone thought you could never build a large and exciting company. We’re joined by Duolingo founder and CEO, Luis von Ahn. Luis dives into how learning English was transformative in his personal trajectory and opportunities in his life, inspiring him to create the most successful EdTech product of all time. A few topics in this episode:
How Duolingo became a leader in the gamification and mobile-first movements in the early 2010s
How the company balances rigorous experimentation with gut instinct to build an app with customer experience at its core
The backstory of Duolingo’s “unhinged, yet wholesome” green owl mascot trending on your TikTok feed
Sponsors:
Sierra: https://bit.ly/acquiredsierra
Duolingo CEO Luis Von Ahn wants you addicted to learning
Luis von Ahn is the co-founder and CEO of Duolingo. There are lots of opportunities to enhance a product like Duolingo with AI, and we talk about all that — but I also wanted to talk to Luis about learning, generally. Duolingo is a global product, and there are a lot of tech tensions there, dealing with different user needs worldwide. We talk about it all in a pretty direct way... including all those unhinged things the owl does on social media.
Links:
Duolingo Introduces AI-Powered Innovations at Duocon 2024 (Duolingo)
Video Call with Lily (Duolingo / YouTube)
AI Boosts Duolingo As Company Posts First Profit (Nasdaq)
Foreign Language Training (US State Department)
Exploring My Villain Origin Story (Duolingo / TikTok)
Duolingo cuts workers as it relies more on AI (The Washington Post)
Why Silicon Valley Is Talking About Founder Mode (The New York Times)
Duolingo's Math and Music lessons finally hit Android a year after iOS (Android Police)
Airbnb CEO Brian Chesky on taking it back to basics (Decoder / The Verge)
How Duolingo is using its 'unhinged content' with Duo the Owl (Digiday)
How we turned Duo's butt into a viral Super Bowl commercial (Duolingo)
A Duolingo employee has apologised for joking about Amber Heard (The Tab)
Transcript: https://www.theverge.com/e/24031882
Credits:
Decoder is a production of The Verge, and part of the Vox Media Podcast Network.
Our producers are Kate Cox and Nick Statt. This episode was edited by Xander Adams. Our supervising producer is Liam James.
The Decoder music is by Breakmaster Cylinder.
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Luis von Ahn Explains How Computers and Humans Learn From Each Other
Breakthroughs in generative AI have created enormous opportunities for humans to learn from computers. We can use them to explain the news, understand historical concepts, fix our coding errors, and so forth. But of course, AI also has to learn from human. The technology digests enormous amounts of written text, and often relies on human feedback to calibrate its models. Luis von Ahn has been at the forefront of these back and forth interactions for years. He is currently the CEO and co-founder of Duolingo, the language learning app, but prior to that, he was one of the original developers of CAPTCHAs, the little puzzles you solve to log into websites and prove that you're a human. And of course, in the process of proving your humanity, you're also training computers to get better at identifying red lights, cross walks, bicycles and wavy letters. On this episode, we discuss the history of his work, the future of CAPTCHAs, the success of Duolingo and how he is using today's advanced AI models in aid of language learnings.
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reCAPTCHA and Duolingo: Luis von Ahn (2020)
In 2000, Luis von Ahn was starting his PhD in computer science when he attended a talk and happened to learn about one of Yahoo's biggest problems: automated bots were signing up for millions of free Yahoo email accounts, and generating tons of spam. Luis' idea to solve this problem became CAPTCHA, the squiggly letters we type into a website to prove we're human. He gave away that idea for free, but years later, that same idea had evolved into a new way to monetize language learning on the web, and became Duolingo. Today, Duolingo is a publicly-traded company with a market cap of $9 billion.
This episode was produced by Casey Herman, with music composed by Ramtin Arablouei. It was edited by Neva Grant.
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EP 87: Luis von Ahn (CEO, Duolingo) on The Marketing Formula that Propelled Duolingo to 500M Users
Luis von Ahn is the CEO and Co-Founder of Duolingo, the world’s #1 language learning application. In the episode, Luis shares the marketing formula they use to drive rapid user growth, including the backstory of Duolingo’s famous owl mascot that has become a viral internet sensation. Luis also dives into the A/B testing and product gamification experiments that have helped make Duolingo a $9B public company, as well as a handful of valuable lessons from his entrepreneurial journey.
(0:00) Intro
(0:54) Building a Culture of Iteration and Continuous Improvement
(2:29) The Importance of User Retention in Duolingo's Growth
(3:24) The Power of A/B Testing in Product Development
(7:57) Balancing User Feedback and Data in Product Design
(10:24) The Role of Marketing in Duolingo's Growth
(15:54) The Importance of Setting Constraints in Product Development
(18:35) The Role of Metrics in Decision Making
(24:02) The Power of Viral Marketing and Memes in Brand Building
(30:44) The Impact of Social Media Marketing on User Acquisition
(35:41) The Impact of Passive Aggressive Notifications
(37:42) Dealing with Controversial Content and Backlash
(42:40) The Importance of Being Scrappy in Marketing
(45:13) The Challenges of Teaching Languages
(49:25) The Importance of User Retention in Duolingo
(51:14) The Journey to Monetizing Duolingo
(56:40) The Challenges of Introducing Monetization in Duolingo
(1:04:16) The Expansion of Duolingo Beyond Languages
(1:09:13) Growing User Base and Utilizing AI
(1:11:16) Impact of Going Public on Duolingo's Operations
(1:16:00) The Importance of Employee Selection in Duolingo
(1:22:42) The entrepreneurial journey
(1:33:46) Improving the Education System
(1:37:21) The honeypot website to catch cheating students
Produced: Rashad Assir & Leah Clapper
Mixed and edited: Justin Hrabovsky
Executive Producer: Josh Machiz
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Logan Bartlett is a Software Investor at Redpoint Ventures - a Silicon Valley-based VC with $6B AUM and investments in Snowflake, DraftKings, Twilio, and Netflix. In each episode, Logan goes behind the scenes with world-class entrepreneurs and investors. If you're interested in the real inside baseball of tech, entrepreneurship, and start-up investing, tune in every Friday for new episodes.
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Logan Bartlett is a Software Investor at Redpoint Ventures - a Silicon Valley-based VC with $6B AUM and investments in Snowflake, DraftKings, Twilio, and Netflix. In each episode of The Logan Bartlett Show, we sit down with the people behind today’s most important startups and extract the tactics, lessons, and frameworks they’ve learned the hard way. Conversations span hiring to GTM, product, growth, fundraising and everything in between - collectively forming the ultimate playbook to make you a better CEO, investor or board member.
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#164 CEO & Co-Founder Duolingo, Luis von Ahn: "The Pitch Was Never Pittsburgh"
Guest: Luis von Ahn, CEO and co-founder of Duolingo
When Luis von Ahn wanted to go to college in the United States, he had to take a standardized test called the TOEFL, or Test of English as a Foreign Language. But there was nowhere in his home country of Guatemala that could accommodate another test-taker, so he flew to war-torn El Salvador, just to take the TOEFL. Many years later, as the co-founder and CEO of Duolingo, Luis and his team “decided this type of thing, we could do a lot better.” Today, more than 4,500 universities accept the results of the online Duolingo English Test — a boon for the estimated 2 billion people currently learning English around the world.
In this episode, Luis and Joubin discuss returning to the office, Carnegie Mellon, identifying strivers, the “Luis dashboard,” ignoring Reddit, pre-meetings, the hardest part of learning, sounding dumb, private security, the job of a professor, digitizing books,
working out every day, April Fools’ campaigns, Duo the owl, and hiring nice people.
In this episode, we cover:
Working in Pittsburgh, in-person (00:57)
How Duolingo hires (06:48)
Growing up in Guatemala (10:29)
Luis’ parents, intelligence, and drive (12:09)
His morning routine (16:56)
Ground truth (19:39)
“The smaller the team, the better” (22:29)
Language education and human behavior (24:32)
Learning English (28:53)
Back to Guatemala (32:03)
CAPTCHA and reCAPTCHA (36:10)
Money vs. impact (41:26)
Luis’ TEDx Talk and public speaking tips (44:46)
Love Language and nontraditional marketing (48:46)
Doubling down on what works (53:27)
Slow hiring (56:44)
Would Luis ever start something new? (59:28)
Who Duolingo is hiring and what “grit” means to Luis (01:01:46)
Links:
Connect with LuisTwitter
LinkedIn
Connect with JoubinTwitter
LinkedIn
Email: grit@kleinerperkins.com
Learn more about Kleiner Perkins
This episode was edited by Eric Johnson from LightningPod.fm
#607: Luis von Ahn, Co-Founder and CEO of Duolingo — How to Be (Truly) Mission-Driven, Monetization Experiments, 10x Growth, Org Chart Iterations for Impacting Metrics, The Intricate Path to an IPO, Best Hiring Practices, Catching Exam Cheaters, The Allure of Toto Toilets, The Future of Duolingo, and How to Stand Out in Your Career
Brought to you by Athletic Greens all-in-one nutritional supplement, Helix Sleep premium mattresses, and LinkedIn Jobs recruitment platform with 800M+ users.
Luis von Ahn (@LuisvonAhn) is an entrepreneur and consulting professor at Carnegie Mellon University, who is considered one of the pioneers of crowdsourcing. He is known for co-inventing CAPTCHAs, being a MacArthur fellow, and selling two companies to Google in his twenties.
He is currently the co-founder and CEO of Duolingo, a language-learning platform created to bring free language education to the world. With more than 500 million users, it is now the most popular language-learning platform and the most downloaded education app in the world.
Luis has been named one of the Brilliant 10 by Popular Science, one of the 50 Best Brains in Science by Discover, one of the Innovators Under 35 by MIT Technology Review, and one of the 100 Most Creative People in Business by Fast Company. Luis also won the 2018 Lemelson-MIT prize, the largest cash prize for invention in the U.S.
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[05:03] Why the Duolingo owl is green
[06:47] The core cause behind Duolingo’s creation, and how Duolingo has evolved over the years
[12:48] Duolingo’s monetization efforts that didn’t quite pan out
[21:06] After initial reluctance, how was the Duolingo workforce convinced monetization needed to happen?
[25:06] As machine-driven translation services get more sophisticated, will human beings still seek to learn other languages via Duolingo?
[29:31] The most pursued/influential languages in the Duolingo system currently
[39:14] The development of Duolingo’s org chart
[45:40] Why Duolingo uses a daily metric
[48:33] Book recommendations
[50:26] Luis’ most worthwhile investments
[52:20] New beliefs, behaviors, or habits
[55:20] Recent life-changing purchases
[1:02:39] What Luis’ updated 2022 billboard might say
[1:06:14] What Luis means when he refers to Duolingo’s “mission,” and how the company’s long view affects decision making
[1:12:34] How Duolingo hires good candidates for the long haul
[1:18:50] Why and how Duolingo went public
[1:25:42] The biggest challenges Luis faces as CEO of a public company
[1:30:50] Duolingo is expanding to teach more than languages
[1:36:18] The Duolingo English Test: proficiency testing from home accepted by 4,200 academic programs across the world
[1:39:51] How Luis’ expertise at catching cheaters during his time as a professor at Carnegie Mellon makes Duolingo products more trustworthy as accredited sources
[1:43:39] The brief conversation with Luis’ personal trainer that changed his routine breakfast — to a different routine breakfast
[1:44:38] Advice to young, driven people entering the working world
[1:48:07] How Luis has become better at saying “No.”
[1:49:56] Luis’ request of the audience and parting thoughts
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A masterclass in crowdsourcing, w/Duolingo's Luis von Ahn
Crowdsourcing is more than a group of people interested in the same cause, it’s a way to tap skills – and scale – that you don’t have. And when it works, it can be the rocket fuel that launches you to scale further than you could have ever imagined. No one knows this better than Luis von Ahn, founder and CEO of Duolingo. Duolingo is a language app with over 300 million users worldwide, who complete over 7 billion exercises a month. It’s their passion for learning that drives them to create even more content for the app – igniting the rocket fuel that Duolingo needs. Cameo appearance by Elizabeth Sampat (game designer and author).
Read a transcript of this interview at: https://mastersofscale.com/luis-von-ahn/
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A masterclass in crowdsourcing, w/Duolingo's Luis von Ahn
Crowdsourcing is more than a group of people interested in the same cause, it’s a way to tap skills – and scale – that you don’t have. And when it works, it can be the rocket fuel that launches you to scale further than you could have ever imagined. No one knows this better than Luis von Ahn, founder and CEO of Duolingo. Duolingo is a language app with over 300 million users worldwide, who complete over 7 billion exercises a month. It’s their passion for learning that drives them to create even more content for the app – igniting the rocket fuel that Duolingo needs. Cameo appearance by Elizabeth Sampat (game designer and author).
Read a transcript of this episode at https://mastersofscale.com
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reCAPTCHA and Duolingo: Luis von Ahn
In 2000, Luis von Ahn was starting his PhD in computer science when he attended a talk and happened to learn about one of Yahoo's biggest problems: automated bots were signing up for millions of free Yahoo email accounts, and generating tons of spam. Luis' idea to solve this problem became CAPTCHA, the squiggly letters we type into a website to prove we're human. He gave away that idea for free, but years later, that same idea had evolved into a new way to monetize language learning on the web, and became Duolingo. Today, the popular app is valued at $1.5 billion, and is seeing a big spike in growth while people are confined to their homes.
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20VC: Duolingo's Luis von Ahn on How CEO's Can Scale With The Company, How VC Herd Mentality In The Valley Really Works and How Chatbots & AI Play A Role In The Future of EdTech
Luis Von Ahn is the Founder & CEO @ Duolingo, the leading language learning platform with over 100m users. They have backing from some of the best in the investing world with over $100m in funding from the likes of USV, Kleiner Perkins, NEA, Google Capital and even Ashton Kutcher. Prior to Duolingo, Luis is known for inventing CAPTCHAs, being a MacArthur Fellow ("genius grant" recipient), and selling two companies to Google in his 20's. Luis has been named one of the 10 Most Brilliant Scientists by Popular Science Magazine, one of the 20 Best Brains Under 40 by Discover.
In Today's Episode You Will Learn:
1.) How Luis, a man as he describes "never great at learning languages", came to found the leading language learning app, Duolingo?
2.) Why do VCs generally believe Edtech to be such a "hard" space? Is that really a fair assumption? How does the role of government change the distribution and landscape of edtech? How does content creation play a pivotal role in edtech today?
3.) What role does Luis believe AI and ML will play for the future of edtech? Will the transition to bots represent a transformational shift in the interface paradigm? How does gamification and edtech integrate? Why does Luis always measure themselves against the most addictive of games?
4.) How has Luis seen himself scale and change as a leader with the scaling of the firm? What story shows an element that Luis struggled with and how did he overcome it? What were the major inflection points in the growth of the firm?
5.) Duolingo recently raised their $25m Series E, how did this round differ from prior rounds? Why did they want to negotiate down the figure they wanted to raise? How did Valley based VCs present herd mentality for the duration of the recent raise?
Items Mentioned In Today's Show:
Luis's Fave Book: Godel, Escher, Bach: An Eternal Golden Braid
Luis' Fave Blog: AVC by Fred Wilson
As always you can follow Harry, The Twenty Minute VC and Luis on Twitter here!
Likewise, you can follow Harry on Snapchat here for mojito madness and all things 20VC.
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a16z Podcast: The Taxonomy of Collective Knowledge
What do disease diagnostics, language learning, and image recognition have in common? All depend on the organization of collective intelligence: data ontologies. In this episode of the a16z Podcast, guests Luis von Ahn, founder of reCaptcha and Duolingo, Jay Komarneni, founder of HumanDX, a16z General Partner Vijay Pande, and a16z Partner Malinka Walaliyadde break down what data ontologies are, from the philosophical (Wittgenstein and Wikipedia!) to the practical (a doctor identifying a diagnosis), particularly as they apply to the field of healthcare and diagnosis.
It is data ontologies, in fact, that enable not only human computation -- but that allow us to map out, structure, and scale knowledge creation online, providing order to how we organize massive amounts of information so that humans and machines can coordinate in a way that both understand.
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#135: Luis Von Ahn on Learning Languages, Building Companies, and Changing the World
Luis von Ahn (@luisvonahn) is an entrepreneur and computer science professor at Carnegie Mellon University. He is known for inventing CAPTCHAs, being a MacArthur Fellow ("genius grant" recipient), and selling two companies to Google in his 20's. Luis has been named one of the 10 Most Brilliant Scientists by Popular Science Magazine, one of the 50 Best Brains in Science by Discover, one of the Top Young Innovators Under 35 by MIT Technology Review, and one of the 100 Most Innovative People in Business by FastCompany Magazine. Luis is currently the co-founder and CEO of Duolingo, a language learning platform created to bring free language education to the world. With more than 100 million users, it is the most popular way to learn languages in the world, and it is the most downloaded app in the Education category on both iTunes (5-star average, 3,300+ reviews) and Google Play. I first met Luis as an early investor in Duolingo, and every time I meet him, I learn something new. In this conversation, we talk about: What 2-3 books and resources he'd recommend to entrepreneurs Language learning tips The clever way he caught cheating students at Carnegie Mellon Early mentors and key lessons learned The story of building and selling reCAPTCHA How to recruit and vet technical talent Duolingo's most surprising sources of users, and much more... Enjoy! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you by 99Designs, the world's largest marketplace of graphic designers. I have used them for years to create some amazing designs. When your business needs a logo, website design, business card, or anything you can imagine, check out 99Designs. I used them to rapid prototype the cover for The 4-Hour Body, and I've also had them help with display advertising and illustrations. If you want a more personalized approach, I recommend their 1-on-1 service. You get original designs from designers around the world. The best part? You provide your feedback, and then you end up with a product that you're happy with or your money back. Click this link and get a free $99 upgrade. Give it a test run. This episode is also brought to you by Headspace, the world’s most popular meditation app (more than 4,000,000 users). It’s used in more than 150 countries, and many of my closest friends swear by it. Try Headspace’s free Take10 program — 10 minutes of guided meditation a day for 10 days. It’s like a warm bath for your mind. Meditation doesn’t need to be complicated or expensive, and it’s had a huge impact on my life. Try Headspace for free for a few days and see what I mean.
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